[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / comedi / drivers / acl7225b.c

/*
 * comedi/drivers/acl7225b.c
 * Driver for Adlink NuDAQ ACL-7225b and clones
 * José Luis Sánchez
 */
/*
Driver: acl7225b
Description: Adlink NuDAQ ACL-7225b & compatibles
Author: José Luis Sánchez (jsanchezv@teleline.es)
Status: testing
Devices: [Adlink] ACL-7225b (acl7225b), [ICP] P16R16DIO (p16r16dio)
*/

#include "../comedidev.h"

#include <linux/ioport.h>

#define ACL7225_SIZE   8	/* Requires 8 ioports, but only 4 are used */
#define P16R16DIO_SIZE 4
#define ACL7225_RIO_LO 0	/* Relays input/output low byte (R0-R7) */
#define ACL7225_RIO_HI 1	/* Relays input/output high byte (R8-R15) */
#define ACL7225_DI_LO  2	/* Digital input low byte (DI0-DI7) */
#define ACL7225_DI_HI  3	/* Digital input high byte (DI8-DI15) */

static int acl7225b_attach(struct comedi_device *dev,
			   struct comedi_devconfig *it);
static int acl7225b_detach(struct comedi_device *dev);

struct boardtype {
	const char *name;	/*  driver name */
	int io_range;		/*  len of I/O space */
};

static const struct boardtype boardtypes[] = {
	{"acl7225b", ACL7225_SIZE,},
	{"p16r16dio", P16R16DIO_SIZE,},
};

#define n_boardtypes (sizeof(boardtypes)/sizeof(struct boardtype))
#define this_board ((const struct boardtype *)dev->board_ptr)

static struct comedi_driver driver_acl7225b = {
	.driver_name = "acl7225b",
	.module = THIS_MODULE,
	.attach = acl7225b_attach,
	.detach = acl7225b_detach,
	.board_name = &boardtypes[0].name,
	.num_names = n_boardtypes,
	.offset = sizeof(struct boardtype),
};

static int __init driver_acl7225b_init_module(void)
{
	return comedi_driver_register(&driver_acl7225b);
}

static void __exit driver_acl7225b_cleanup_module(void)
{
	comedi_driver_unregister(&driver_acl7225b);
}

module_init(driver_acl7225b_init_module);
module_exit(driver_acl7225b_cleanup_module);

static int acl7225b_do_insn(struct comedi_device *dev,
			    struct comedi_subdevice *s,
			    struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n != 2)
		return -EINVAL;

	if (data[0]) {
		s->state &= ~data[0];
		s->state |= (data[0] & data[1]);
	}
	if (data[0] & 0x00ff)
		outb(s->state & 0xff, dev->iobase + (unsigned long)s->private);
	if (data[0] & 0xff00)
		outb((s->state >> 8),
		     dev->iobase + (unsigned long)s->private + 1);

	data[1] = s->state;

	return 2;
}

static int acl7225b_di_insn(struct comedi_device *dev,
			    struct comedi_subdevice *s,
			    struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n != 2)
		return -EINVAL;

	data[1] = inb(dev->iobase + (unsigned long)s->private) |
	    (inb(dev->iobase + (unsigned long)s->private + 1) << 8);

	return 2;
}

static int acl7225b_attach(struct comedi_device *dev,
			   struct comedi_devconfig *it)
{
	struct comedi_subdevice *s;
	int iobase, iorange;

	iobase = it->options[0];
	iorange = this_board->io_range;
	printk(KERN_INFO "comedi%d: acl7225b: board=%s 0x%04x\n", dev->minor,
	       this_board->name, iobase);
	if (!request_region(iobase, iorange, "acl7225b")) {
		printk(KERN_ERR "comedi%d: request_region failed - I/O port conflict\n",
			dev->minor);
		return -EIO;
	}
	dev->board_name = this_board->name;
	dev->iobase = iobase;
	dev->irq = 0;

	if (alloc_subdevices(dev, 3) < 0)
		return -ENOMEM;

	s = dev->subdevices + 0;
	/* Relays outputs */
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE;
	s->maxdata = 1;
	s->n_chan = 16;
	s->insn_bits = acl7225b_do_insn;
	s->range_table = &range_digital;
	s->private = (void *)ACL7225_RIO_LO;

	s = dev->subdevices + 1;
	/* Relays status */
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE;
	s->maxdata = 1;
	s->n_chan = 16;
	s->insn_bits = acl7225b_di_insn;
	s->range_table = &range_digital;
	s->private = (void *)ACL7225_RIO_LO;

	s = dev->subdevices + 2;
	/* Isolated digital inputs */
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE;
	s->maxdata = 1;
	s->n_chan = 16;
	s->insn_bits = acl7225b_di_insn;
	s->range_table = &range_digital;
	s->private = (void *)ACL7225_DI_LO;

	return 0;
}

static int acl7225b_detach(struct comedi_device *dev)
{
	printk(KERN_INFO "comedi%d: acl7225b: remove\n", dev->minor);

	if (dev->iobase)
		release_region(dev->iobase, this_board->io_range);

	return 0;
}

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
bcd62c0b JLS	1	/*
	2	* comedi/drivers/acl7225b.c
	3	* Driver for Adlink NuDAQ ACL-7225b and clones
	4	* José Luis Sánchez
	5	*/
	6	/*
	7	Driver: acl7225b
	8	Description: Adlink NuDAQ ACL-7225b & compatibles
	9	Author: José Luis Sánchez (jsanchezv@teleline.es)
	10	Status: testing
	11	Devices: [Adlink] ACL-7225b (acl7225b), [ICP] P16R16DIO (p16r16dio)
	12	*/
	13
	14	#include "../comedidev.h"
	15
	16	#include <linux/ioport.h>
	17
	18	#define ACL7225_SIZE 8 /* Requires 8 ioports, but only 4 are used */
	19	#define P16R16DIO_SIZE 4
	20	#define ACL7225_RIO_LO 0 /* Relays input/output low byte (R0-R7) */
	21	#define ACL7225_RIO_HI 1 /* Relays input/output high byte (R8-R15) */
	22	#define ACL7225_DI_LO 2 /* Digital input low byte (DI0-DI7) */
	23	#define ACL7225_DI_HI 3 /* Digital input high byte (DI8-DI15) */
	24
0a85b6f0 MT	25	static int acl7225b_attach(struct comedi_device *dev,
0a85b6f0 MT	26	struct comedi_devconfig *it);
71b5f4f1	27	static int acl7225b_detach(struct comedi_device *dev);
bcd62c0b	28
502dd079	29	struct boardtype {
ed276144 BP	30	const char name; / driver name */
ed276144 BP	31	int io_range; /* len of I/O space */
502dd079	32	};
bcd62c0b	33
502dd079	34	static const struct boardtype boardtypes[] = {
bcd62c0b JLS	35	{"acl7225b", ACL7225_SIZE,},
	36	{"p16r16dio", P16R16DIO_SIZE,},
	37	};
	38
502dd079 BP	39	#define n_boardtypes (sizeof(boardtypes)/sizeof(struct boardtype))
502dd079 BP	40	#define this_board ((const struct boardtype *)dev->board_ptr)
bcd62c0b	41
139dfbdf	42	static struct comedi_driver driver_acl7225b = {
68c3dbff BP	43	.driver_name = "acl7225b",
	44	.module = THIS_MODULE,
	45	.attach = acl7225b_attach,
	46	.detach = acl7225b_detach,
	47	.board_name = &boardtypes[0].name,
	48	.num_names = n_boardtypes,
	49	.offset = sizeof(struct boardtype),
bcd62c0b JLS	50	};
bcd62c0b JLS	51
7114a280 AT	52	static int __init driver_acl7225b_init_module(void)
	53	{
	54	return comedi_driver_register(&driver_acl7225b);
	55	}
	56
	57	static void __exit driver_acl7225b_cleanup_module(void)
	58	{
	59	comedi_driver_unregister(&driver_acl7225b);
	60	}
	61
	62	module_init(driver_acl7225b_init_module);
	63	module_exit(driver_acl7225b_cleanup_module);
bcd62c0b	64
0a85b6f0 MT	65	static int acl7225b_do_insn(struct comedi_device *dev,
	66	struct comedi_subdevice *s,
	67	struct comedi_insn insn, unsigned int data)
bcd62c0b JLS	68	{
	69	if (insn->n != 2)
	70	return -EINVAL;
	71
	72	if (data[0]) {
	73	s->state &= ~data[0];
	74	s->state \|= (data[0] & data[1]);
	75	}
	76	if (data[0] & 0x00ff)
	77	outb(s->state & 0xff, dev->iobase + (unsigned long)s->private);
	78	if (data[0] & 0xff00)
	79	outb((s->state >> 8),
0a85b6f0	80	dev->iobase + (unsigned long)s->private + 1);
bcd62c0b JLS	81
	82	data[1] = s->state;
	83
	84	return 2;
	85	}
	86
0a85b6f0 MT	87	static int acl7225b_di_insn(struct comedi_device *dev,
	88	struct comedi_subdevice *s,
	89	struct comedi_insn insn, unsigned int data)
bcd62c0b JLS	90	{
	91	if (insn->n != 2)
	92	return -EINVAL;
	93
	94	data[1] = inb(dev->iobase + (unsigned long)s->private) \|
0a85b6f0	95	(inb(dev->iobase + (unsigned long)s->private + 1) << 8);
bcd62c0b JLS	96
	97	return 2;
	98	}
	99
0a85b6f0 MT	100	static int acl7225b_attach(struct comedi_device *dev,
0a85b6f0 MT	101	struct comedi_devconfig *it)
bcd62c0b	102	{
34c43922	103	struct comedi_subdevice *s;
bcd62c0b JLS	104	int iobase, iorange;
	105
	106	iobase = it->options[0];
	107	iorange = this_board->io_range;
0dfd69bf	108	printk(KERN_INFO "comedi%d: acl7225b: board=%s 0x%04x\n", dev->minor,
0a85b6f0	109	this_board->name, iobase);
bcd62c0b	110	if (!request_region(iobase, iorange, "acl7225b")) {
0dfd69bf BJ	111	printk(KERN_ERR "comedi%d: request_region failed - I/O port conflict\n",
0dfd69bf BJ	112	dev->minor);
bcd62c0b JLS	113	return -EIO;
	114	}
	115	dev->board_name = this_board->name;
	116	dev->iobase = iobase;
	117	dev->irq = 0;
	118
	119	if (alloc_subdevices(dev, 3) < 0)
	120	return -ENOMEM;
	121
	122	s = dev->subdevices + 0;
	123	/* Relays outputs */
	124	s->type = COMEDI_SUBD_DO;
	125	s->subdev_flags = SDF_WRITABLE;
	126	s->maxdata = 1;
	127	s->n_chan = 16;
	128	s->insn_bits = acl7225b_do_insn;
	129	s->range_table = &range_digital;
	130	s->private = (void *)ACL7225_RIO_LO;
	131
	132	s = dev->subdevices + 1;
	133	/* Relays status */
	134	s->type = COMEDI_SUBD_DI;
	135	s->subdev_flags = SDF_READABLE;
	136	s->maxdata = 1;
	137	s->n_chan = 16;
	138	s->insn_bits = acl7225b_di_insn;
	139	s->range_table = &range_digital;
	140	s->private = (void *)ACL7225_RIO_LO;
	141
	142	s = dev->subdevices + 2;
	143	/* Isolated digital inputs */
	144	s->type = COMEDI_SUBD_DI;
	145	s->subdev_flags = SDF_READABLE;
	146	s->maxdata = 1;
	147	s->n_chan = 16;
	148	s->insn_bits = acl7225b_di_insn;
	149	s->range_table = &range_digital;
	150	s->private = (void *)ACL7225_DI_LO;
	151
bcd62c0b JLS	152	return 0;
	153	}
	154
71b5f4f1	155	static int acl7225b_detach(struct comedi_device *dev)
bcd62c0b	156	{
0dfd69bf	157	printk(KERN_INFO "comedi%d: acl7225b: remove\n", dev->minor);
bcd62c0b JLS	158
	159	if (dev->iobase)
	160	release_region(dev->iobase, this_board->io_range);
	161
	162	return 0;
	163	}
90f703d3 AT	164
	165	MODULE_AUTHOR("Comedi http://www.comedi.org");
	166	MODULE_DESCRIPTION("Comedi low-level driver");
	167	MODULE_LICENSE("GPL");